I rarely see women 50+ in matched skirt suits, even in the canyons of the financial district. The Hillary pant suit, or blazer-and-pants (unmatched) prevails, a no-nonsense 'uniform' in the nether-world between business casual and formal.
But there is nothing as chic as a variation on the skirt suit- one that's all but lost, like the veiled hat- the traveling suit.
Here's a 70s Dior version, a skirt and a 7/8 length coat. This is what you wore for a train or plane trip, or a day shopping in the city. My mother wore hers with an alligator bag and matching shoes. Underneath, a dressmaker blouse or fine cashmere sweater.
An aside: those women knew a 3/4 from a 7/8 coat and cared.
You can occasionally find this ensemble in shops like Aquascutum, where the suit is really a raincoat with a matching skirt.
I hope to adopt this look when I'm truly elderly (and pine for one perfect traveling suit now). Certainly a more pleasing option than the track suit with windbreaker or puff parka worn with running shoes, the senior default outfit around here.